diff --git a/modules/i3plus-ext-mes-pcn-apiservice/src/main/java/cn/estsh/i3plus/ext/mes/pcn/apiservice/serviceimpl/base/MesReworkTaskServiceImpl.java b/modules/i3plus-ext-mes-pcn-apiservice/src/main/java/cn/estsh/i3plus/ext/mes/pcn/apiservice/serviceimpl/base/MesReworkTaskServiceImpl.java
index d978131..a7a0f52 100644
--- a/modules/i3plus-ext-mes-pcn-apiservice/src/main/java/cn/estsh/i3plus/ext/mes/pcn/apiservice/serviceimpl/base/MesReworkTaskServiceImpl.java
+++ b/modules/i3plus-ext-mes-pcn-apiservice/src/main/java/cn/estsh/i3plus/ext/mes/pcn/apiservice/serviceimpl/base/MesReworkTaskServiceImpl.java
@@ -352,7 +352,7 @@ public class MesReworkTaskServiceImpl implements IMesReworkTaskService {
 
     private void updateOldSn(MesProductionAssembly mesProductionAssembly) {
         DdlPackBean oldSnPackBean = DdlPackBean.getDdlPackBean();
-        DdlPreparedPack.getStringEqualPack(mesProductionAssembly.getProductSn(), "productSn", oldSnPackBean);
+        DdlPreparedPack.getStringEqualPack(mesProductionAssembly.getAssemblySn(), "productSn", oldSnPackBean);
         DdlPreparedPack.getOrderByPack(new Object[]{CommonEnumUtil.ASC_OR_DESC.DESC.getValue()}, new String[]{"createDatetime"}, oldSnPackBean);
 
         MesProduceSn oldProduceSn = mesProduceSnRepository.getByProperty(oldSnPackBean);